Work-supporting means for boxmaking machines



y 1945- G. P. WOODBURY 2,375,400

WORK SUPPORTING MEANS FOR BOX-MAKING MACHINES Filed Nov. 25, 1942 3 SheetsSheet l Fig. I.

INVENTORQ GLEN P. IYOODBURY ATTORNEY y 1945- v G. P. WOODBURY 2,375,400

' WORK SUPPORTING MEANS FOR ,BOX-MAKINGMACHINES Filed Nov. 25, 1942 5 Sheets-Sheet 2 'INVENTOR. GLEN PQWOODBURY ATTORNEY Y May 8, 1 4 G. P. wOoDBuRY WORK SUPPORTING MEANS FOR BOX-MAKING MACHINES Filed Nov. 25, 1942' 3 Sheets-Sheet 3 IN VEN TOR. GL-E N P. {OOOBUR Y M Arron/5x plates 6 are assembled in position on the studs 8 (Fig. 8) they will be separated a distance equal to the thickness of one of the fixed plates, hereinafter described. The two movable plates 6 are held in position on the wedge member 5 by compression springs 9 which are coiled about the s flje nter e e we n t 2912 m e ID carri' movable work-supporting member 2 and the bent portions" of the movable plates :6.

Thus,"plates 6 move withwedge member 5. Pref I M to permit the springs 9 to move wedge member 5 just'prior to a staple driving operationlFig. '7) to raise work support 2 into supporting contact with box parts 2| and hold the box parts in contact with a lobe 22 carried by stapler body 23 during'a staple-driving operation (Fig. 7), all as seeme nr at nt NQ- 04 Upon. ljcom'plejtion er the sta'p gaming "operation, cam

' 1 IT; operatingonarm "l8," retracts "wedge member erably, both movable plates 6 are provided with 1 crosswise grooves H in thetop surfaceyof thei forked ends.

One of the fixed plates (identified the ref- Y erence numeral I2) is shownfin 'F 'ig'. "5.Each" fixed plate I2 is preferably fo r l z-"s'hape d and provided with crosswise grooves llin the top sur-v face of the forks.

her. In the completed assembly, fixed" plates 12 -,are spaced from. each otherand from work-supporting member 2 by-spacers M of ;a thickness equal. to the thickness 10f .a ..movable, plate 6, so .as to. provide a telescopic engagement between therplate's 6 and I2.v Each spacer I4 is provided c. with-a ;hole |5,(Fig.;6 so that fixed plates 12 and-spacers l4 may be: secured to the recessed ndertesiirface of work-supporting member {by as rew is i It will be seen by reference to Figs. 1 and 2 thahthe fixed plates I2 secured to work-supporting;;mernbe1';;2,, and the movable 1 plates r 6 secured to wedge member 5, :are arranged. so thatthey alternatewith eachother in their relativepositibns. provides 3 several frictional contact surfaces in addition to the contactsurfacesprovided'by wedge member 5.

. 1 It will als'o be noted that thetgrooved surfaces .pe t etsqli s c -i n'st nc e eb providing a-serijes of-wiping edgeswhich will pre .-.Ven t excess accumulation 0f.- oil or dirt betwe'eneach,setof plates 7 In. operation the action of, the a wedge member 5, oeleyatethe work-supportingmembenZ until .the workis contacted and supportedfliigs. {7; and

,8) ,is'the sameas the action ofthe wedge member in said PatentNo. 2,304,510. When'thestapledriving occurs, :the wedge members 5- has been moved su p the inclined surface of. body mainbet}! a by; means ,of. the springs 19;. and the load; of. v stapling is transmitted .through l he fixed plates v are, secured to the work-supportingmember 2,

{and the movable plates .6 are secured to the wedge I frnember 5,.the wedge member 5 cannot slidedown the inclined surface of body member fl i-without slippage at the contact surfacesof movable plates 6,jfixedfplates 1' 2, and work-supporting member 3. i- The se'icontact surfaces, be ng 'und r emee1 pressure of] the stapling load, produce friction forceswhich' counteract the slippage t ridency. Thetotal .value of these friction forces is. directly I 'proportionalfto the number; of contact surfaces lahi e six): e l asi fi nf' te vent-t wedge member 5 from sliding down, thusholding I .;the work-supporting suriace of member 2: in

I contact, with the work under. extreme loadsqv A -fully described in said Patent-No. 2,-304s5l0, wedge member 5 is normally held in retracted position against the action of springs 9 by a .cam'

fl which contacts adepending armeI-8Qcarried by wedge member 5 (Fig. 1).. Cami] is keyed to asha ft' l9 which is rotated in tiine d relationv to. he e er nto a a .drire fl ifle-57 The head of'the plate is pro-. vided with a hole l3 to receive a fastening mem I. ,A m o'ng other advantages,

5, permitting work-supporting member 2 todrop from the position shown in shownin-Fig.;.1;.

vides an improved automatically adjustable work supportfadapted to perform efficiently under adverse conditions and thus to contribute to a univfrictional engagementjvf ,ing member a wedge. member, movable b I the body membe gand'the work-supporting: mem her to raise the latter member and when lfai's'ed j and having frictional en; ge ent withlthe worksu port ng membenem form stapling operation and a uniform stapled product.

Itwill be understood that the invention is not to be limited to the illustrative embodiment and V thfih all of the inventive features need not be-used 1 ,conjointly as they may be usedto advantage separately oriin variouscombinations as defined in the subjoined claims. L 3 HI claim:

Wed

member and havinggfrictional eng e W -S PP r i ie.member;and a piatelse'efi ed to the "work-supporting member gand" h the wedgemem er. (2 In a box-making machine'having'ifasterierdriving means, nan, adjustable worKesupp rting unit comprising a bodyme'rnberQ.aiworkesupporteen to hold it in raised-position durin a fast d iv Q rei m a to; member, a plate 's'ecuregil' v to' th' work-supporting membe and havihjg fri' engagement with the j fi ijstme'ntioned"plate.

3. In. abox inaking' machine having iiastenerri'y g eens; an; adjustable work- Supporting unit comprising a body member, aw 5) ber-Uto'raise the latt unit c mprisingabed memp a, a, porting member, a wedge member rhovable betmem ct rid e m m W m zihef eb bet en the body mm'berfari ditheworkfsupporfting gsmember andjwhen" raised pea e driving operation; ,means move the wedge mem a platelscured og he'WQI ridriving ;nie'an adjustable tween the body memberand the wci'kI-s lbporting member toraise the-latter member, and

raise'dto hold it inrai'sed position uringe. es-

teneredriving, eperation, eans; toi I, move Wedge memb r-ha v p1ate ecur to tnewfedge secured to Fig. '7 to the position this invention pro- I i e ester 'rmember, a plurality of plates secured to the wedge member, and a plurality of plates secured to the work-supporting member, the plates secured to the wedge member having frictional engagement with plates secured to the worksupporting member. e

6. In a, box-making machine having fastenerdriving means, an adjustable work-supporting unit comprising a body member, a work-supporting member, a wedge member movable between the body member and the work-supporting member to raise the latter member and when raised to hold it in raised position during a fastenerdriving operation, means to move the wedge member, a, plate secured to the wedge member and having frictional engagement with the worksupporting member, and. a plate secured to the work-supporting member and having frictional engagement with the wedge member, one of said plates having a plurality of grooves or recesses on one surface.

7. In a box-making machinehaving fastenerdriving means, an adjustable work-supporting unit comprising a body member, a work-supporting member, .a wedge member movable between the body member and the work-supporting member to raise the latter member and when raised to hold it in raised position during a fastenerdriving operation, means to move the wedge member, a plate secured to the wedge member and having frictional engagement with the worksupporting member, and a plate secured to the work-supporting member and having frictional engagement with the wedge member, the wedge member having grooves or recesses on the sur-' face having frictional engagement with a plate.

8. In a box-making machine having fastenerdriving means, an adjustable work-supporting unit comprising a body member, a Work-supporting member, a wedge member movable between the body member and the work-supporting member to raise thelatter member and when raised tohold it in raised position during a fastenerdriving operation, means to move the wedge work-supporting member and having frictional engagement with the, wedge member, the body member having grooves or recesses on the surface having contact with the wedge member.

GLEN P. 'WooDBURY. 

